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@uitrit tatrs @sind @fitta Letters .Patent No. 79,777, dated July .7, 1868.

IMPROVE) BOOT-CRIMPER.

@Ligt 5:11am ninna tu in tipa Etnias zrtmt mit mating aart nt the nun.

TO ,ALL TO WHOM THESE PRESENTS SHALL COME:l

Be it known' that I, Josisn M. READ, of Boston, inthe countyotf Suffolk, and State vof Massachusetts, have invented anew and useful Improvement in Boot-Crimpers; and do hereby declare thei'ollowingtot-be a full, clear, andexact description thereof, due reference being had to the accompanying drawings making part of this specification, and in whichg- Figure 1 is a longitudinal section of my'invention.

Figure 2 being a perspective view of` its pyramidal straining-block.

This invention is an'improvcment upon that for which Letters Patent of the United States were issued to Josiah Copeland, on the 20th day of January, 1844, and subsequently reissued uon the 11th` day of August, 1857;

As shown in such Letters Patent, the device in question wascomposedv of u joined clasp, through which a' straining-'screw is passed loosely, this screw being screwed through a. pyramidal block., of such a size and -shape as to extend into the enclosure between the jaws of the clasp, and conne the leather between the two.

Thc'in'rncr faccs'oil thejaws oi' the clasp were formed-with teeth, to ta-kc hold of the leather and'cling tight-ly thereto.

i These-teeth being formed upon the clasp, instead of'upon the pyramid'al block, bruise and indent the outery Y surface of thc'lcather tosuch an extent as 'to prove a very serious evil to vboot-manufaeturers and dealers. Y

My present invention is intended to retain the advantages of the cheap construction of the hoot-crimper, asabove described, and to obviate the objection last mentioned; and to accomplish this, I form the sides ofthe pyramidal block with teeth, instead of making such teeth upon the clasp. By this means, the outer surface of the corners of the leather is kept intact, and thc injurious consequences before' alluded to avoided.

To persons unaccu'stomed'to the process of crimping boot-uppers my invention may be considered `very slight, but when it is known that I obviate the objections above mentioned, and am enabled to manufacture and scll a'boot-crimper atone-halt` the cost of most of those in the market which hdve been produced to accomplish the same result, my invention will be seen to be ot'value.

I ani-aware thatin a certain clas's of boot-crimpers, in which movable jaws are employed, in addition to the clasp and spreader before mentioned, it has been customary to form teeth upon the outer faces of such jaws, in order to take hold of the`inner surface ofthe leather.

In my present invention, although Iemploy teeth to takehold of the inner surface ofthe leather, yet these teeth are formed upon the sides of the pyramidal spreader, which thus serves the double purpose yot clamping the leather within the clasp and oi' eilcctually preventing slipping ofthe leather therein.

In addition to the advantages oflcheap construction of my invention, as before mentioned, there is a second and very important advantage'over any'othersin use, which is, that the crimper may be appliedrto the leather and stretching'or forming-block with infinitely more case," and in much less time, for, as the yoke or clasp is raised upon the screw, and above'the spreader, the two ends of the leather have merely to be passed about such spreader, end the clasp or yokcl'dropped down over thein.

`By the' usual mode ncwgenerally adopted, of employing the movable auxiliaryjaws, it is ofte'n perplexing',`

and always c work of some time, to introduce the cornersof the leather between such movable jaws andthe clasp.

In the drawings above mentioned, A denotes the joinedclasp 'of the boot-crimp B, being the strainingscrow, and C thc pyrainidal spreader, ,the sides of this`spreader being serrated, indented, or toothed, as shown 'at aa a, dsc., and being'curved or convex, while the inner faces of thejaws of the clasp Adare also curved or concave, to correspond to the curve ofthe pyramidal spreader.

Twoof the sides only ofthe spreader C may be toothed, or all four", as considered desirable. I claim as my invention a 'boot-crimper, composed of the jawedclasp, the screw, and lthe pyramidal block, with the retaining-teeth formed upon the latter, essentially as hereinA shown and described.

JosIAH M. READ.

Witnesses: 4

Guo. A. Louise, JOEL MoUL'roN. 

